RX - 3rd Gen (2010-2015) Discussion topics related to the 2010 - 2015 RX350 and RX450H models

Draining the battery in 30 minutes

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Old 02-20-23, 04:12 PM
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Canucks
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Default Draining the battery in 30 minutes

While I waited for the kid to finish their sports I was in the car listening to a podcast via Bluetooth. I turned the accessories on to avoid the car turning off after ten minutes to save power (lol). I don't think I had the air on but after half an hour the audio and nav screen starting cutting out/flickering so I turn the car off. Lo and behold dead battery when I try and start it up ten minutes later.

I have sat in my car listening to the radio for half an hour at a time with no issues. Battery is three years old. Don't think its the alternator as the car turns over fine now after being jumped and driving around for a bit.
Old 02-20-23, 04:44 PM
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IntrinoX
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Sounds like you depleted the battery and is time to replace.
Old 02-20-23, 06:00 PM
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PrimeDave
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Always keep the engine ON when using accessories or electronics that are being powered by the car. It doesn’t take much to drain an even fully charged battery in a Lexus without the engine on…
Old 02-20-23, 08:20 PM
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salimshah
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Practically all auto stores will test out the battery under load and the charging system to sell you a new battery.

3yrs is somewhat normal life of battery [specially for hot and cold region].

Headlamps and brake lights are major drain [other than the start].

Salim
Old 04-05-23, 07:50 AM
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m1964
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Not to forget that the DRLs are ON when accessories are On if the headlight switch is in AUTO position.
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